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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65848 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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svn 2018-11-20 10:14:03 +00:00
parent 3e9beaf72b
commit d4a5883886
1 changed files with 17 additions and 17 deletions
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34
coroutine/x86/Context.h
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@ -21,39 +21,39 @@ const size_t COROUTINE_REGISTERS = 4;
// The fiber context (stack pointer). // The fiber context (stack pointer).
typedef struct typedef struct
{ {
void **stack_pointer; void **stack_pointer;
} coroutine_context; } coroutine_context;
// The initialization function. // The initialization function.
typedef void(* coroutine_start)(coroutine_context *from, coroutine_context *self) __attribute__((fastcall)); typedef void(* coroutine_start)(coroutine_context *from, coroutine_context *self) __attribute__((fastcall));
void coroutine_initialize( void coroutine_initialize(
coroutine_context *context, coroutine_context *context,
coroutine_start start, coroutine_start start,
void *stack_pointer, void *stack_pointer,
size_t stack_size size_t stack_size
) { ) {
/* Force 16-byte alignment */ /* Force 16-byte alignment */
context->stack_pointer = (void**)((uintptr_t)stack_pointer & ~0xF); context->stack_pointer = (void**)((uintptr_t)stack_pointer & ~0xF);
if (!start) { if (!start) {
assert(!context->stack_pointer); assert(!context->stack_pointer);
/* We are main coroutine for this thread */ /* We are main coroutine for this thread */
return; return;
} }
*--context->stack_pointer = NULL; *--context->stack_pointer = NULL;
*--context->stack_pointer = (void*)start; *--context->stack_pointer = (void*)start;
context->stack_pointer -= COROUTINE_REGISTERS; context->stack_pointer -= COROUTINE_REGISTERS;
memset(context->stack_pointer, 0, sizeof(void*) * COROUTINE_REGISTERS); memset(context->stack_pointer, 0, sizeof(void*) * COROUTINE_REGISTERS);
} }
coroutine_context * coroutine_transfer(coroutine_context * current, coroutine_context * target) __attribute__((fastcall)); coroutine_context * coroutine_transfer(coroutine_context * current, coroutine_context * target) __attribute__((fastcall));
inline void coroutine_destroy(coroutine_context * context) inline void coroutine_destroy(coroutine_context * context)
{ {
context->stack_pointer = NULL; context->stack_pointer = NULL;
} }
#if __cplusplus #if __cplusplus